Cosmetic Customizations..........
The thing is, dear friends, we tend to customize stuff tailored to meet our taste and satisfaction. This is the beauty of these cars such as Corollas and Civics specially. And this is not just restricted to Pakistan. You'll find plethora of YouTube videos over which you could just comment "But Why?"
We love the look of the 18" factory Si wheels the US gets and resultantly get our hands on replicas in 17" and 18". Over there, in countless videos, I see people replacing those wheels with something, um, different. I've seen people installing amber (orange colored) side markers whereas in the US guys are replacing their "ugly amber" side markers with our clear ones or the smoked out ones.
So, its about personal taste with respect to customizations provided you get the availability of desired stuff from your local market. The world is crazy.